[dllthomas]

"The main problem is the difficulty to hire Haskell programmers."

That does not match my experience. I posted a Haskell position, promising to pay substantially below market rate with no hope of equity, and had a dozen or so applicants that seemed worthwhile (and a handful that really stood out, one of which turned into the hire).

"Then there's the entire ecosystem surrounding Haskell, which is still old and antiquated (looking at you Cabal)"

IME, pip is worse and Python seems a go-to choice for startups.

"Finally, the very high bar to just learn how to correctly program in Haskell puts it out of reach of 99% of the developer community."

Something like 99.9999% of the developer community isn't going to be working at your startup regardless.